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Given a sorted linked list, delete all duplicates such that each element appear only once.
For example,
Given 1->1->2, return 1->2.
Given 1->1->2->3->3, return 1->2->3.
按照顺序依次比较，遇到duplicate就跳过去。
Java code:
/** * Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { val = x; } * } */ public class Solution { public ListNode deleteDuplicates(ListNode head) { if(head == null) { return null; } ListNode p1 = head; ListNode p2 = head.next; while(p2!= null) { if(p1.val == p2.val) { p1.next = p2.next; }else { p1 = p2; } p2 = p2.next; } return head; } }
Leetcode Remove Duplicates from Sorted List
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原文地址：http://www.cnblogs.com/anne-vista/p/4799803.html
